1. To change the font size in Windows Control Panel, first open Control Panel by clicking on the “Start” button in the lower left corner of the screen.
2. Once the Control Panel window appears, click on the “Appearance and Personalization” option.
3. In the Appearance and Personalization window that appears next, click on the “Adjust font size (DPI)” option, located under the heading of “Display.”
4. You will then be presented with a number of options for changing your font size. You can select one of the pre-defined font sizes using the drop-down menu, or you can use the sliders to customize the font size of all text to an exact size.
5. Once you are satisfied with the size of the font, click on the “OK” button to save your changes. Your new font size should now be applied to all windows and dialog boxes. You can check this by opening the Control Panel and observing the effect of the font size on the various menus and text elements within it.